A winding and unwinding structure and a winch

Abstract

The utility model belongs to the technical field of traction device, provide a kind of winding and unwinding structure and capstan, winding and unwinding structure includes: support frame;Drum, rotatably installed on support frame;Pressing plate, rotatably set on support frame;First elastic member, one end is connected to support frame, the other end acts on pressing plate;Roller assembly, including the roller that can be axially moved and rotatably set on support frame, and the second elastic member being set between support frame and roller.Compared with prior art, the utility model is by setting pressing plate and roller assembly, on the one hand, pressing plate exerts sustained radial compression force on the rope under the action of first elastic member, ensure that each layer of rope is tightly fitted, prevent loosening or skipping rope;On the other hand, roller assembly maintains contact with the rope under the pre-pressure of second elastic member, and when the rope approaches the edge of the drum, it exerts axial thrust on it, pushes it away from the limit area and guides it back to the middle winding area, effectively prevents one-sided stacking.

Description

Technical Field

[0001] This utility model belongs to the field of traction device technology, specifically relating to a winding structure and a winch. Background Technology

[0002] Winches, as a common winding and unwinding device, are widely used in engineering machinery, rescue vehicles, ships, and outdoor operations for pulling, lifting, or securing heavy objects. Their core function is to achieve the orderly winding and unwinding of the rope through the rotation of the drum. In actual use, the quality of the rope winding directly affects the winch's working efficiency, safety, and service life.

[0003] Existing winches typically include a support frame, a drum rotatably mounted on the support frame, and a power unit for driving the drum's rotation. During winding, the rope is guided onto the drum surface by an external guide mechanism and wound layer by layer. However, due to the lack of an effective axial rope arrangement and tension control mechanism, the rope tends to concentrate and stack towards one axial end of the drum during winding, especially under manual operation or insufficient guidance, which exacerbates the problem.

[0004] This stacking phenomenon prevents the stranded rope from being evenly laid on the drum surface, resulting in local bulges or multiple overlapping layers. This not only reduces the effective rope capacity of the drum and severely limits the length of the stranded rope that can be wound up, but may also cause malfunctions such as squeezing and wear between the strands, knotting, or even rope skipping and derailment. In addition, uneven winding can also cause eccentric loads when the drum rotates, affecting the stability of equipment operation and accelerating fatigue damage to mechanical parts.

[0005] Although some existing winches are equipped with sophisticated automatic rope arrangers or rope guiding mechanisms, these structures are often costly, bulky, and difficult to maintain, making them unsuitable for compact or low-cost applications. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a winding structure and winch in light of the current state of the technology.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a roll-up structure is proposed, including: a support frame;

[0008] The roller is rotatably mounted on the support frame;

[0009] A pressure plate is rotatably mounted on the support frame and located on the outside of the drum, forming a winding space between the pressure plate and the outer wall of the drum for winding the rope.

[0010] A first elastic element has one end connected to the support frame and the other end acting on the pressure plate to apply an elastic force toward the roller to the pressure plate;

[0011] The roller assembly includes a roller axially movable and rotatably mounted on the support frame, and a second elastic element disposed between the support frame and the roller. The roller movably abuts against the rope. The second elastic element is provided at both axial ends of the roller to provide a restoring elastic force to the roller.

[0012] The second elastic element is configured to apply an axial thrust to the rope via the roller when the rope is wound to the edge region of the drum.

[0013] In one of the above-described roll-up structures, the pressure plate includes at least a partial arc-shaped pressing surface, which is disposed corresponding to the outer circumference of the roller.

[0014] In one of the above-mentioned roll-up structures, a first fixed shaft is provided on the support frame, the axis of the first fixed shaft is parallel to the axis of the roller, and one end of the pressure plate is rotatably sleeved on the first fixed shaft.

[0015] In one of the above-described winding structures, the roller assembly includes a second fixed shaft and a rotating shaft arranged parallel to each other on the support frame. The two shafts form a limiting space on the support frame for the winding rope to pass through. The roller and the second elastic element are both arranged on the second fixed shaft.

[0016] In one of the above-mentioned winding structures, the support frame is provided with a third fixed shaft that is parallel to the axis of the roller, and the first elastic element is a torsion spring, which is sleeved on the third fixed shaft.

[0017] In one of the above-mentioned winding structures, the torsion spring includes a first elastic end and a second elastic end, the first elastic end is fixed on the support frame, and the second elastic end abuts against the pressure plate.

[0018] In one of the above-mentioned winding structures, a limiting groove is provided on the outer peripheral wall of the roller, and the twisted rope abuts against the limiting groove to provide axial limiting for the twisted rope when the roller winds up the twisted rope.

[0019] In one of the winding structures described above, the pressure plate further includes a guide ramp, which is disposed at the end of the pressure plate to guide the rope smoothly into the winding space.

[0020] In one of the above-mentioned winding structures, the support frame includes support plates disposed at both ends of the roller axial direction, and an elastic ring is provided between the two support plates.

[0021] This utility model also proposes a winch to solve the above-mentioned technical problems, including the aforementioned winding and unwinding structure.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) By setting up a flexible pressure plate and roller assembly, dual control of the twisted rope is achieved: on the one hand, the pressure plate applies a continuous radial clamping force to the twisted rope under the action of the first elastic element, ensuring that each layer of twisted rope is tightly attached and preventing loosening or rope skipping; on the other hand, the roller assembly keeps in contact with the twisted rope under the pre-pressure action of the second elastic element, and applies an axial thrust to the twisted rope when it approaches the edge of the roller, pushing it away from the limit area and guiding it back to the middle winding area, effectively preventing single-sided stacking.

[0024] (2) By setting an arc-shaped pressing surface on the pressure plate, the arc-shaped pressing surface matches the outer circumference of the roller, which increases the contact area between the pressure plate and the rope, making the pressure distribution more uniform and avoiding rope wear or deformation caused by local stress concentration; at the same time, it helps to guide the rope to slide smoothly into the winding space and maintain a good fit during the multi-layer winding process, further improving the neatness of the rope arrangement and the winding density.

[0025] (3) By setting a limiting groove on the roller, the limiting groove can initially position the rope and prevent it from slipping axially on the roller surface, thus improving the guiding accuracy. When the rope enters the edge area, the groove can work with the roller to transmit the axial thrust to the rope more effectively, strengthen the correction effect, ensure the rope is arranged in an orderly manner, and avoid the phenomenon of tangled ropes and overlapping ropes. Attached Figure Description

[0026] Figure 1 This is a perspective view of a roll-up structure according to this utility model.

[0027] Figure 2 It is a 3D view of the roll-up structure concealing the pressure plate and rollers.

[0028] Figure 3 This is a partial sectional view of the connection between the pressure plate and the roller.

[0029] In the diagram, 100 is a support frame; 110 is a first fixed shaft; 120 is a second fixed shaft; 130 is a rotating shaft; 140 is a third fixed shaft; 150 is a support plate; 160 is an elastic ring; 200 is a roller; 300 is a pressure plate; 310 is an arc-shaped pressing surface; 320 is a guide slope; 400 is a first elastic element; 410 is a first elastic end; 420 is a second elastic end; 500 is a roller assembly; 510 is a roller; 511 is a limiting groove; 520 is a second elastic element; and 600 is a twisted rope. Detailed Implementation

[0030] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0032] like Figures 1 to 3 As shown, a winding structure of this utility model is used for winding a rope 600, including: a support frame 100, a roller 200, a pressure plate 300, a first elastic element 400, and a roller assembly 500.

[0033] Specifically, the support frame 100 serves as the main frame that supports all components, is used to support and fix the winding structure, and can be installed in the overall structure of the winch.

[0034] The roller 200 is rotatably mounted on the support frame 100. Its rotational connection methods include, but are not limited to: setting a rotating shaft on the support frame 100 to achieve rotational engagement, adopting an embedded structure installation, or setting a bearing between the roller 200 and the support frame 100 to achieve rotational support.

[0035] Preferably, the drum 200 has an I-shaped structure, including a columnar body and limiting discs located at both ends of the body along its axial direction. The columnar body constitutes the winding area of ​​the rope 600, while the limiting discs on both sides are used to limit the axial movement range of the rope 600 and prevent it from coming off the drum 200.

[0036] The pressure plate 300 is rotatably mounted on the support frame 100 and located on the outside of the roller 200. A winding space for winding the rope 600 is formed between the pressure plate 300 and the outer wall of the roller 200.

[0037] One end of the first elastic element 400 is connected to the support frame 100, and the other end acts on the pressure plate 300, applying an elastic force toward the roller 200 to the pressure plate 300.

[0038] During operation, as the drum 200 rotates to wind the rope 600, the elastic force applied by the first elastic element 400 to the pressure plate 300 is transmitted to the surface of the rope 600 through the pressure plate 300. Since the rope 600 is approximately cylindrical, the contact between the upper and lower layers of rope 600 during multi-layer winding can be considered as line contact. When the rope 600 tends to stack (non-uniform arrangement), the stacked area will compress the pressure plate 300, causing the first elastic element 400 to be compressed. At this time, the reaction force generated by the first elastic element 400 acts on the rope 600 through the pressure plate 300. Since the center lines of the upper and lower layers of rope 600 are usually not on the same straight line as the point of application of the force from the pressure plate 300, this force will generate a torque, causing the upper layer of rope 600 to shift towards the unstacked area, thereby breaking the stacking state and achieving a uniform spread of the rope 600 on the surface of the drum 200.

[0039] The roller assembly 500 includes a roller 510 axially movable and rotatably mounted on a support frame 100, and a second elastic element 520 disposed between the support frame 100 and the roller 510. The roller 510 movably abuts against the rope 600, and its rotatable structure design allows for rolling contact between the roller 510 and the rope 600, effectively reducing the frictional resistance of the rope 600 during winding and unwinding. A second elastic element 520, preferably a spring, is provided on both axial sides of the roller 510 to provide a restoring elastic force to the roller 510. The second elastic element 520 is configured to apply an axial thrust to the rope 600 via the roller 510 when the rope 600 is wound to the edge region of the drum 200.

[0040] During operation, as the rope 600 is laid flat along the axial direction of the drum 200 under the action of the pressure plate 300 and the first elastic element 400, the roller 510 moves synchronously and gradually compresses the second elastic element 520. When the rope 600 approaches the limiting disc at the end of the drum 200 and reaches the winding limit position, the limiting disc provides axial resistance to the rope 600. At the same time, the radial pressure applied to the rope 600 by the first elastic element 400 through the pressure plate 300 is converted into an axial force, forcing the rope 600 to change its winding direction and begin to lay flat in the opposite direction. Simultaneously, the elastic potential energy stored in the second elastic element 520 is released, pushing the roller 510 to move in the opposite direction and guiding the rope 600 back towards the central area, thereby preventing the rope 600 from getting stuck or piling up at the limit position at the end of the drum 200.

[0041] This solution achieves dual control of the twisted rope 600 by setting up an elastic pressure plate 300 and a roller assembly 500: On the one hand, the pressure plate 300 applies a continuous radial clamping force to the twisted rope 600 under the action of the first elastic element 400, ensuring that each layer of twisted rope 600 is tightly attached and preventing loosening or rope skipping; on the other hand, the roller assembly 500 maintains contact with the twisted rope 600 under the pre-pressure of the second elastic element 520, and applies an axial thrust to the twisted rope 600 when it approaches the edge of the roller 200, pushing it away from the limit area and guiding it back to the central winding area, effectively preventing one-sided stacking. This structure can achieve automatic tensioning and axial correction functions without additional power drive or electronic control system, significantly improving the uniformity and stability of the twisted rope 600 winding, increasing the rope capacity per unit volume, and extending the service life of the equipment.

[0042] Preferably, the pressure plate 300 includes at least a partial arcuate pressing surface 310, which is disposed corresponding to the outer periphery of the roller 200.

[0043] The arc-shaped pressing surface 310 matches the outer circumference of the roller 200, increasing the contact area between the pressure plate 300 and the twisted rope 600, making the pressure distribution more uniform and avoiding wear or deformation of the twisted rope 600 caused by local stress concentration; at the same time, it helps to guide the twisted rope 600 to slide smoothly into the winding space and maintain a good fit during the multi-layer winding process, further improving the neatness of the rope arrangement and the winding density.

[0044] A first fixed shaft 110 is provided on the support frame 100. The axis of the first fixed shaft 110 is parallel to the axis of the roller 200. One end of the pressure plate 300 is rotatably sleeved on the first fixed shaft 110.

[0045] The pressure plate 300 is reliably rotated and installed by means of the first fixed shaft 110. The structure is simple and easy to assemble. It ensures that the pressure plate 300 can rotate flexibly under the action of elastic force, adapt to the changes in the outer diameter of the twisted rope 600 with different layers in real time, and always maintain effective compression of the twisted rope 600, thereby improving the responsiveness and reliability of the structure.

[0046] The roller assembly 500 includes a second fixed shaft 120 and a rotating shaft 130 arranged parallel to each other on the support frame 100. The two form a limiting space on the support frame 100 for the rope 600 to pass through. The roller 510 and the second elastic element 520 are both arranged on the second fixed shaft 120.

[0047] The second fixed shaft 120 and the rotating shaft 130 together form a guide and limiting structure to restrict the excessive axial displacement of the rope 600. The roller 510 and the second elastic element 520 are integrated on the second fixed shaft 120. The structure is compact and the positioning is accurate, ensuring that the roller 510 can move stably along the axial direction under the action of elastic force and respond to the position change of the rope 600 in a timely manner, so as to achieve efficient and stable axial correction function.

[0048] The support frame 100 is provided with a third fixed shaft 140 that is parallel to the axis of the roller 200. The first elastic element 400 is a torsion spring, which is sleeved on the third fixed shaft 140.

[0049] A torsion spring is used as the first elastic element 400 and sleeved on the third fixed shaft 140. It is easy to install, has stable force, and can provide continuous and controllable torsional elastic force to drive the pressure plate 300 to always press against the roller 200. At the same time, this arrangement saves space and is conducive to the miniaturization and modular design of the overall structure.

[0050] Furthermore, the torsion spring includes a first elastic end 410 and a second elastic end 420. The first elastic end 410 is fixed on the support frame 100, and the second elastic end 420 abuts against the pressure plate 300.

[0051] The two ends of the torsion spring are fixed to the support frame 100 and the pressure plate 300 respectively, forming a clear force transmission path, ensuring that the elastic force acts on the pressure plate 300 efficiently and accurately, and avoiding slippage or failure. This connection method has a solid structure and is easy to adjust. The pretension can be adjusted according to the thickness of the rope 600 or the tension requirements, which enhances applicability and stability.

[0052] It is worth mentioning that a limiting groove 511 is provided on the outer peripheral wall of the roller 510, and the twisted rope 600 abuts against the limiting groove 511 to provide axial limiting for the twisted rope 600 when the roller 200 winds up the twisted rope 600.

[0053] The limiting groove 511 can initially position the twisted rope 600 to prevent it from slipping axially on the surface of the roller 510 and improve the guiding accuracy. When the twisted rope 600 enters the edge area, the limiting groove 511 can work with the roller 510 to more effectively transmit the axial thrust to the twisted rope 600, enhance the correction effect, ensure that the twisted rope 600 is arranged in an orderly manner, and avoid the phenomenon of tangled ropes and overlapping ropes.

[0054] The pressure plate 300 also includes a guide slope 320, which is disposed at the end of the pressure plate 300 to guide the twisted rope 600 smoothly into the winding space.

[0055] The guide slope 320 serves to smoothly guide the rope, reducing the frictional resistance when the rope 600 enters the winding space and preventing damage caused by jamming or scratching. Especially in the initial winding or multi-layer transition stage, it can effectively guide the rope 600 to slide smoothly into the correct position, improving the convenience and safety of operation.

[0056] The support frame 100 includes support plates 150 disposed at both ends of the roller 200 along the axial direction, and an elastic ring 160 is provided between the two support plates 150.

[0057] The elastic ring 160 connection enables the two side support plates 150 to have a certain degree of flexible deformation capability. When subjected to external impact or asymmetrical load, it can absorb vibration, alleviate stress concentration, and improve the vibration resistance and durability of the overall structure. At the same time, it allows for slight deformation to adapt to the radial expansion caused by the multiple layers of the twisted rope 600, ensuring the normal operation of the pressure plate 300 and the roller assembly 500, and extending the service life of the equipment.

[0058] This solution also proposes a winch, including the aforementioned winding and unwinding structure.

[0059] This solution provides an innovative structure for winding and unwinding the rope 600. The design mainly consists of a support frame 100, a roller 200, a pressure plate 300, a first elastic element 400, and a roller assembly 500. The support frame 100 serves as the basic frame, supporting and fixing the entire winding and unwinding structure, and can be integrated into a larger winch system. The roller 200 is mounted on the support frame 100 via a rotatable connection such as a shaft or bearing, preferably employing an I-beam structure to limit the axial movement of the rope 600. The pressure plate 300 works in conjunction with the first elastic element 400 to apply continuous radial pressure to the rope 600, ensuring a tight fit between layers and preventing loosening or rope skipping. The roller assembly 500 applies axial thrust when the rope 600 approaches the edge of the roller 200, guiding it back to the central winding area and preventing one-sided stacking.

[0060] Specifically, the pressure plate 300 in this design has an arc-shaped pressing surface 310 and a guide slope 320, which not only increases the contact area with the rope 600 but also reduces the frictional resistance when the rope 600 enters the winding space. The limiting groove 511 on the outer peripheral wall of the roller 510 provides additional axial positioning support for the rope 600, enhancing the correction effect. In addition, an elastic ring 160 is provided between the support plates 150 at both ends of the support frame 100, giving the overall structure a certain degree of flexible deformation capability and improving vibration resistance and durability.

[0061] This winding structure achieves automatic tensioning and axial correction without the need for additional power drive or electronic control system, greatly improving the uniformity and stability of the 600-degree winding of the winch, increasing the rope capacity per unit volume, and extending the service life of the equipment. Furthermore, it is applicable to various types of winches, demonstrating broad application prospects and practicality.

[0062] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0064] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A winding structure for winding a rope, characterized in that, The roll-up structure includes: Support frame; The roller is rotatably mounted on the support frame; A pressure plate is rotatably mounted on the support frame and located on the outside of the drum, forming a winding space between the pressure plate and the outer wall of the drum for winding the rope. A first elastic element has one end connected to the support frame and the other end acting on the pressure plate to apply an elastic force toward the roller to the pressure plate; The roller assembly includes a roller axially movable and rotatably mounted on the support frame, and a second elastic element disposed between the support frame and the roller. The roller movably abuts against the rope. The second elastic element is provided at both axial ends of the roller to provide a restoring elastic force to the roller. The second elastic element is configured to apply an axial thrust to the rope via the roller when the rope is wound to the edge region of the drum.

2. A roll out structure as claimed in claim 1, wherein, The pressure plate includes at least a partial arc-shaped pressing surface, which is disposed corresponding to the outer circumference of the roller.

3. The roll-up structure as described in claim 1, characterized in that, The support frame is provided with a first fixed shaft, the axis of which is parallel to the axis of the roller, and one end of the pressure plate is rotatably sleeved on the first fixed shaft.

4. A roll out structure as claimed in claim 1, wherein, The roller assembly includes a second fixed shaft and a rotating shaft arranged parallel to each other on the support frame, which together form a limiting space on the support frame for the rope to pass through. The roller and the second elastic element are both arranged on the second fixed shaft.

5. A roll out structure as claimed in claim 1, wherein, The support frame is provided with a third fixed shaft that is parallel to the axis of the roller. The first elastic element is a torsion spring, which is sleeved on the third fixed shaft.

6. A roll-off structure as claimed in claim 5, wherein The torsion spring includes a first elastic end and a second elastic end. The first elastic end is fixed on the support frame, and the second elastic end abuts against the pressure plate.

7. A roll out structure as claimed in claim 1, wherein, A limiting groove is provided on the outer peripheral wall of the roller, and the rope abuts against the limiting groove to provide axial limiting for the rope when the roller winds up the rope.

8. The roll-up structure as described in claim 1, characterized in that, The pressure plate also includes a guide ramp, which is disposed at the end of the pressure plate to guide the rope smoothly into the winding space.

9. A roll out structure as claimed in claim 1, wherein, The support frame includes support plates disposed at both ends of the roller axial direction, and an elastic ring is provided between the two support plates.

10. A winch characterized by, Includes a roll-up structure as described in any one of claims 1 to 9.

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